A Common Mode and Differential Mode Integrated EMI Filter

As the trend of power electronics equipment is miniaturization and modularization, it is necessary to reduce the volume of each device in power electronics equipment. Traditional EMI filter, which has many devices, has become the major obstacle to reduce the volume power electronics equipment. Based on the worldwide research of integrated filter, a novel EMI integrated filter constructed with two different types of magnetic core is proposed. Equivalent wiring of common mode (CM) and differential mode (DM) current are analyzed. CM and DM equivalent circuit model are established. At last, the validity of the structure is certified by Saber software simulation and experiment